Why is the reading so different?

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snapsnap

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Dan
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Hi i have now started using studio flash and i have a light meter.

I set the shutter spedd on light meter to 125 and iso 100.

It give a read out of say f5.6

I set these settings to camera give and take a stop they look fine and the camera screen.

So i keep shooting only to find when i came back and look at raw they are well over exposed.

I am using a sony a700 and ps5. Could it be the software doing this?

Here are the examples Jpeg first.

Many Thanks

DSC02032.jpg


outthecam.jpg
 
These two photos look identical, in the exif the settings and time are the same as well.
All I can come up with is you have taken the second photo before the flash has had time to recharge or the camera is set in some way to automatically bracket and do extra shots with over/under exposures.
 
Last edited:
The two look the same processed from the same RAW image.....

What does the histogram look like on camera?

When using the light meter, I take it you do so by setting to incident mode and pressing the button before firing the flash and when fired you get the reading?
 
Is that the exact same image?

It looks like an auto correction is being used at some stage of this processing and its trying to expose the back more,and blowing out the foreground.

Are you using ACR in PS5 for your raw conversion?
 
Thanks for the reply people.

They are the same image just i shot in raw and jpeg. The jpeg is the camera correction i guess.

I dont think i am using anything in ps5 just opening the image.

The meter i got is the Sekonic Flashmate L-308S i use this by setting the shutter speed then hitting the button to get the other readings/settings.

Thanks for the help
 
So when you load up your raw file in ps, does it come up with ACR? A box that allows you to adjust exposure, blacks, fill, recovery, contrast, brightness, vibrance etc?
 
well on my monitor 1 looks not so blown out as 2. where did you meter from and are you sure the subject as not moved forward ?.
 
I also think the RAW software is applying a correction when the image when it opens....

When it opens what is the exposure slider value? (should be zero)
 
Yes because it's trying to make the white grey.... That is normal..... If the jpg looks right but the RAW not I'm not sure.....
 
snapsnap said:
no do i need to do this. If so how??

Cheers
Click to expand...
Calibration (adjusting the reading of the flash meter to match the camera) becomes necessary/desirable if the meter is reading wrongly or if the camera is 'optimistic' re the ISO setting. But typically, this amounts to no more than 1/3rd or 1/2 a stop, and your error here seems to be much more than this, so I doubt whether it has anything to do with calibration.
 
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